this might have been asked b4 but o well.

so i filled the SS for the 1st time with 100octane...and DAMMMM!!!
the SS LIKES IT!!
feels so much MEANER, healthier, powerful, etc. 2 bad it costs $3.90!!!
GOOD LOWD thats alotta money!


anyway my question is will it hurt/ b a bad thing if i put 4-6 gallons of 100 and top it off with 91???

 

Well first make sure its lead free gas cause lead eats away at the mass air flow sensor. Secondly unless you have a fairly build motor like turbo, supercharger, juice, or a stroker kit your just wasting your money. My friend Tim has a 99 Z28 with a 360 built bottom end with cams and bolt ons and runs 11.5s and hes just using 93 octane.

------------------
98 Red Z28 A4 bought on 4/02/02.
Flowmaster, K&N Filter, Flowtech Dump pipe.
Best 1/4: 13.554 at 102.62

 

we cant get 93 in LV.
and it does feel like there's a small gain in performance...with the 100.

im not sure xactly what detenation(sp) sounds like, but i think the SS was having some the other day with 91.

it really seems to run so much better on 100.

 

Whew! When I read the title I had to do a double take.I thought you were asking about mixed gas like a weedeater....only Honda Civics get that.




------------------
1999 Z28 LS1 Camaro
A-4 with factory 2.73s,
Metallic Blue,Leather,T-Tops.
Mods...
K&N & Dynomouth exhaust set-up.
Times...
8.59 @ 84.1 mph 1/8th
13.19 @ 105.7 mph 1/4.
Dynoed 303.6 rwhp
and 327 lbft of torque.

Gone ,but not forgotten..
My 01 GT Casper 8.50s 1/8th with minor bolt ons
1997 Ram air TA 7.70s in 1/8th spraying the juice.
1996 TA 8.00s in the 1/8th on the juice.
1995 Mustang GT 9.30s in the 1/8th with bolt ons.

 

I mix Motorsport 103 unleaded with 94 pump gas to run 95.5 octane when I want to run my best times. Any higher octane and it slows me down.

------------------
'94 Black Z28, 383, 700R4
1/8 ET: 7.49
1/4 ET: 11.86
1/4 MPH: 112
http://www.downtime.cz28.com.index.html

 

The only thing Octane does is prevent pre-denotation. In other words, higher octane for higher compression engines.

I have run 93-100 and there is no real gain.


~Taylor

 

Actualy the higher octane will make your engine temp slightly higher. But oh that smell makes it worth it!

 

you put gas through your MAF?!?!?! I think you mean your 02 sensors.


------------------
2002 Camaro Z/28 LS1 A4 (2.73's)
Sunset Orange Metallic
Fernco, SLP Airlid, K&N Filter, 17" SS 10 Spokes
-----------------------
1995 Ford Aspire M5
!Torque & !Power

 

Yes thank you for correcting me at the time I had a slight case of brain fart.

------------------
98 Red Z28 A4 bought on 4/02/02.
Flowmaster, K&N Filter, Flowtech Dump pipe.
Best 1/4: 13.554 at 102.62